Year	Number of Firms
1992-01-01	88
1997-01-01	164
2002-01-01	141
2003-01-01	148
2004-01-01	135
2005-01-01	138
2006-01-01	162
2007-01-01	168
2008-01-01	175
2009-01-01	191
2010-01-01	226
2011-01-01	207
2012-01-01	217
2013-01-01	224
2014-01-01	236
2015-01-01	221
2016-01-01	224